ICD-10-CM · Chapter 9 · I00–I99
I42
Cardiomyopathy
Diseases of the circulatory system
Heads up:this is a parent code. It's typically not directly billable — you need to drill down to a more specific child code (one with additional digits) to use on a claim.
Quick facts
- Code
- I42
- Type
- Category / header (non-billable)
- ICD-10-CM chapter
- Chapter 9 — Diseases of the circulatory system
- Category
- I42
- Specificity
- 3 characters
How coders use this code
ICD-10-CM I42 is a category (header) for cardiomyopathy. It is generally not reported directly on a claim — coders drill down to a more specific child code (one with additional characters) that matches the documentation. Use the related codes below to find the billable code that fits, and verify against the annual NCHS/CMS guidelines.
Related codes in I42
- I42.0Dilated cardiomyopathy
- I42.1Obstructive hypertrophic cardiomyopathy
- I42.2Other hypertrophic cardiomyopathy
- I42.3Endomyocardial (eosinophilic) disease
- I42.4Endocardial fibroelastosis
- I42.5Other restrictive cardiomyopathy
- I42.6Alcoholic cardiomyopathy
- I42.7Cardiomyopathy due to drug and external agent
- I42.8Other cardiomyopathies
- I42.9Cardiomyopathy, unspecified
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